Q Center
CVE-2021-28807
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
1DescriptionNVD
A post-authentication reflected XSS vulnerability has been reported to affect QNAP NAS running Q’center. If exploited, this vulnerability allows remote attackers to inject malicious code. QNAP have already fixed this vulnerability in the following versions of Q’center: QTS 4.5.3: Q’center v1.12.1012 and later QTS 4.3.6: Q’center v1.10.1004 and later QTS 4.3.3: Q’center v1.10.1004 and later QuTS hero h4.5.2: Q’center v1.12.1012 and later QuTScloud c4.5.4: Q’center v1.12.1012 and later
AnalysisAI
A post-authentication reflected XSS vulnerability has been reported to affect QNAP NAS running Q’center. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. A post-authentication reflected XSS vulnerability has been reported to affect QNAP NAS running Q’center. If exploited, this vulnerability allows remote attackers to inject malicious code. QNAP have already fixed this vulnerability in the following versions of Q’center: QTS 4.5.3: Q’center v1.12.1012 and later QTS 4.3.6: Q’center v1.10.1004 and later QTS 4.3.3: Q’center v1.10.1004 and later QuTS hero h4.5.2: Q’center v1.12.1012 and later QuTScloud c4.5.4: Q’center v1.12.1012 and later Affected products include: Qnap Q\'Center.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Exposure of Private Information in QNAP Q'center Virtual Appliance version 1.7.1063 and earlier could allow authenticate
Command injection vulnerability in change password of QNAP Q'center Virtual Appliance version 1.7.1063 and earlier could
Command injection vulnerability in SSH of QNAP Q'center Virtual Appliance version 1.7.1063 and earlier could allow authe
Command injection vulnerability in date of QNAP Q'center Virtual Appliance version 1.7.1063 and earlier could allow auth
Command injection vulnerability in networking of QNAP Q'center Virtual Appliance version 1.7.1063 and earlier could allo
This issue affects: QNAP Systems Inc. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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